A long time ago, I watched a program about an experiment during which the subjects were given a drink which lowers the level of serotonin significantly. Is this a well-known experiment? Are the ingredients of the drink known, or any ingredient capable of such an effect?

high levels of serotonin induce optimism,pleasantness so with low level u should feel moody,even be aggressive..also when brain detects night melatonin is made from serotonin and u feel sleepy(that's why u drink milk before bedetime -milk contains tryptophan...(aminoacid from which serotonin is synthesized)...then from serotonin melatonin is made(melatonin is secreted from pineal gland)during night...

Every man is a star whose light can make shadows dance differently and change our view of landscape permanently***

I dont know
Hope someone who oes answers
because i dont want that drink!

but i know when I need seratonin i eat chockolate. yum!

"How far you go in life depends on your being tender with the young, compassionate with the aged, sympathetic with the striving and tolerant of the weak and strong. Because someday in life you will have been all of these".